8372981 has 4 divisors (see below), whose sum is σ = 8410752. Its totient is φ = 8335212.

The previous prime is 8372971. The next prime is 8372999. The reversal of 8372981 is 1892738.

8372981 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1892738 = 2 ⋅946369.

It is a cyclic number.

It is not a de Polignac number, because 8372981 - 2¹⁴ = 8356597 is a prime.

It is a super-2 number, since 2×8372981² = 140213621652722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8372941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18551 + ... + 18996.

It is an arithmetic number, because the mean of its divisors is an integer number (2102688).

Almost surely, 2^8372981 is an apocalyptic number.

It is an amenable number.

8372981 is a deficient number, since it is larger than the sum of its proper divisors (37771).

8372981 is a wasteful number, since it uses less digits than its factorization.

8372981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37770.

The product of its digits is 24192, while the sum is 38.

The square root of 8372981 is about 2893.6103746013. The cubic root of 8372981 is about 203.0610847742.

The spelling of 8372981 in words is "eight million, three hundred seventy-two thousand, nine hundred eighty-one".